package com.system.permissiondemo.controller;

import io.swagger.annotations.Api;
import org.springframework.boot.web.servlet.error.ErrorController;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;

/**
* @Description:    定义自己的异常处理
* @Author:         Joe
* @CreateDate:     2019/9/12 18:31
*/
@Api(tags = "自定义异常及错误处理")
@Controller
@RequestMapping("${server.error.path:${error.path:/error}}")
public class CustomizeErrorController implements ErrorController {
    @Override
    public String getErrorPath() {
        return "error";
    }

    @RequestMapping(produces = MediaType.TEXT_HTML_VALUE)
    public ModelAndView errorHtml(HttpServletRequest request,
                                  Model model){
        HttpStatus status = getStatus(request);
       if(status.is4xxClientError()){
            model.addAttribute("message","你这个请求出错了，换个姿势再来吧！");
       }
        if(status.is5xxServerError()){
            model.addAttribute("message","服务器端出错了，换个姿势再来吧！");
        }
        return new ModelAndView("error");
    }

    private HttpStatus getStatus(HttpServletRequest request){
        Integer statusCode = (Integer) request.getAttribute("javax.servlet.error.status_code");
        if(statusCode == null){
            return HttpStatus.INTERNAL_SERVER_ERROR;
        }
        try {
            return HttpStatus.valueOf(statusCode);
        }catch (Exception ex){

        return HttpStatus.INTERNAL_SERVER_ERROR;
        }
    }
}
